Nut-lock.



a perspective view of a bolt and its nut with UNITED STATES PatentedNovember 8, 1904.

PATENT OFF-ICE.

HENRY L. FINLEY AND SAMUEL C. BAUGHN, JR., OF BERTRAND, MISSOURI; SAIDBAUGHN, JR., ASSIGNOR TQ SAID lFINLEY.

Nur-Lock.

sPEcIr-IGATION forming part of Letters Patent No'. 774,418,dated'Novembe 8,1904. Application iiid April 1, 1904. serial mi.201,106. (mi model.)

To a/ZZ whom t may concern:

Be it known that we, HENRY L. FINLEY and SAMUEL C. BAUGHN, Jr. citizensof the United States, residing at Bertrand, in the county of Mississippiand State of Missouri, have invented a new and usefulv Nut-Lock, ofwhich the following is a specification.

This invention relates to devices for preventing nuts from turningbackwardly upon bolts, and has for'its object to simplify and improvethe construction and produce a device of this character which may bereadily applied to any form of bolt and nut in ordinary use withoutmaterial change in the structure or weakening the holding power ofeither.

vWith lthese and other objects in view, which will appear as the natureof the invention is better understood, the'same consists in certainnovel features of construction, as hereinafter fully described andclaimed.

1n the accompanying drawings, forming a part of this specication, and inwhich corresponding parts are denoted by like designating characters, isillustrated the preferred form of the embodiment of the inventioncapable of carrying the same into practic l operation, it beingunderstood that changes in the shape, proportions, and generalassemblage of the parts may be resorted to without departing from theprinciple of the invention `or sacrificing any of its advantages, andthe right is therefore reserved of making all the changes andmodifications which fairly fall within the scope' of the invention andthe claims made therefor.

In the drawings thus employed, Figure 1 is the improvement applied. Fig.2 is a transse section, enlarged, through the nut and t.

In the improved device the bolt 10 is provided with one or morelongitudinally-disposed grooves 11, preferably inclined or tangential ofthe bolt lon one side and radially thereof on the other side. i

The nut 12, which may be of any of the usual forms employed, is providedon one side with a transverse aperture 13, communicating with its.threaded interior, and in one ofV its Sides, preferably diametricallyopposite',a re- 50 l cess 14 is formed. The corners-of the nut whichcome between the recess 14 and aper ture 13 are provided with cavities15, arranged in alinement with the recess and aperture. A spring 16engages the cavities 15, said spring being-provided at one end thereofwith a stud 17 for engagement with the recess 14 and at its opposite endwith a pawl 18, which passes through the aperture 13 and engages one ofthe channels 11 in the bolt. The portion of the spring 16 between thecavities 15 is curved outwardly away from the adjacent face of the nut.

inclined on one side, so that it will click over the inclined'side ofthe groove 11 and permit the nut to be'turned freely in one direction,but will 'eiectually lock. it from movement in the opposite direction.The cavities 15 assist in holding the spring in position and preventaccidental displacement of the latter. v

By this simple means it is obvious that an inexpensive, easily-applied,and efcient locking means between the nut 'and bolt is provided whichmay be applied to any size or form of nut and bolt.

By-providing a .plurality of the longitudinal channels 11 the pawl18 maybe applied atone of several points in each revolution of the nut,

so it `may be locked at any point desired, which construction may benecessary when employed upon some classes of structures.

. Having thus described the invention, what 1. In a nut-locking device,a bolt having a lplurality of longitudinal grooves, a nut provided -withoppositely-dis'po'sed transverse recesses, and a spring provided at oneend with a pawl fol-engaging the grooves in the bolt throughlone of saidrecesses and at'its oppo-y site end with a stud seated in the oppositerecess, the intermediate portion of the spring being curved outwardlyand spaced from the side of the nutwhereby the nut is yieldablylockedfrom rotation on said bolt and releaseral recess spaced from saidaperture., said nut having cavities in its corners between said recessand aperture, and a spring movably engaging' said cavities and providedat one end thereof with a pai/v1 for engaging the grooves in said boitthrough said aperture and at itsopposite end with a stud for engagementwith said spaced recess, the intermediate portion of the spring betweensaid cavities being curved outwardly from the face of the nut.

*fraaie 3. in a nut-locking device, a bolt having a plurality., oflongitudinally-disposed grooves, a nut having a transverse aperture onone side thereof communicating with its threadedinterior and providedwith cavities in its corners, and a springmovably engaging saidcornercavities and provided at one end with means for attachment tothenut and at its opposite end with a pawl extending through said apertureand engaging the grooves in the bolt, the intermediate portion of said.spring between vthe corner-cavities being curved outwardly from theadjacent face of the nut.

lln testimony that we claim the foregoing as our own we have hereto axedour signatures in the presence of two ,witnesses HENRY L. FlNL JY.SAMUEL C. BAQUGHN, JR.

VVitnessesz,

JOHN CUNNINGHAM, R. L. S'rmNn'rr.

